/Engine/Source/Runtime/Slate/Public/Framework/Docking/TabManager.h
static void GetAllStacks ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< SDockingArea > & InDockArea, [TArray](API\Runtime\Core\Containers\TArray)< [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< SDockingTabStack > > & OutTabStacks )